131409833 has 16 divisors (see below), whose sum is σ = 146119680. Its totient is φ = 117613584.

The previous prime is 131409823. The next prime is 131409869. The reversal of 131409833 is 338904131.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 131409833 - 2¹⁸ = 131147689 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131409833.

It is not an unprimeable number, because it can be changed into a prime (131409823) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34460 + ... + 38082.

It is an arithmetic number, because the mean of its divisors is an integer number (9132480).

Almost surely, 2^131409833 is an apocalyptic number.

It is an amenable number.

131409833 is a deficient number, since it is larger than the sum of its proper divisors (14709847).

131409833 is a wasteful number, since it uses less digits than its factorization.

131409833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3748.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 131409833 is about 11463.4127989879. The cubic root of 131409833 is about 508.4043851115.

It can be divided in two parts, 1314098 and 33, that added together give a palindrome (1314131).

The spelling of 131409833 in words is "one hundred thirty-one million, four hundred nine thousand, eight hundred thirty-three".